Sequences

This page documents the built-in numeric sequences of Husk. They are accessed by İ followed by another character from the following list, e.g. İf for the Fibonacci numbers.

Char	Description	Sequence
½	Powers of 1/2	[1/2,1/4,1/8,1/16,1/32,1/64,1/128,1/256,...
↕	Palindromes in base 2	[1,3,5,7,9,15,17,21,27,31,33,45,...
↔	Palindromes in base 10	[1,2,3,4,5,6,7,8,9,11,22,33,...
±	Positive and negative integers	[1,-1,2,-2,3,-3,4,-4,5,-5,6,-6,7,-7,...
¬	Alternating bits	[1,0,1,0,1,0,1,0,1,0,...
\	Reciprocals of positive integers	[1,1/2,1/3,1/4,1/5,1/6,1/7,1/8,1/9,1/10,...
-	Negative integers	[-1,-2,-3,-4,-5,-6,-7,-8,-9,-10,...
0	Even positive integers	[2,4,6,8,10,12,14,16,18,20,...
1	Odd positive integers	[1,3,5,7,9,11,13,15,17,19,...
2	Powers of 2	[2,4,8,16,32,64,128,256,512,1024,2048,...
3	Powers of 3	[3,9,27,81,243,729,2187,6561,19683,59049,...
5	Powers of 5	[5,25,125,625,3125,15625,78125,390625,1953125,...
7	Powers of 7	[7,49,343,2401,16807,117649,823543,5764801,...
Z	All integers	[0,1,-1,2,-2,3,-3,4,-4,5,-5,6,-6,7,-7,...
_	Powers of -1	[-1,1,-1,1,-1,1,-1,1,-1,1,..
f	Fibonacci numbers	[1,1,2,3,5,8,13,21,34,55,89,144,...
p	Prime numbers	[2,3,5,7,11,13,17,19,23,29,31,37,41,...
r	Ruler sequence	[0,1,0,2,0,1,0,3,0,1,0,2,0,1,0,4,0,1,0,2,...
₅	1, 2, 5 and their multiples by 10	[1,2,5,10,20,50,100,200,500,1000,2000,5000,...
π	Digits of pi	[3,1,4,1,5,9,2,6,5,3,5,8,9,7,9,3,2,3,...
⁰	Powers of 10	[10,100,1000,10000,100000,1000000,10000000,...
€	Euro coin and bill values (finite list)	[1/100,1/50,1/20,1/10,1/5,1/2,1,2,5,10,20,50,100,200,500]
□	Square numbers	[1,4,9,16,25,36,49,64,81,100,121,144,169,...