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A243658 a(0)=0; thereafter a(n) = noz(n+a(n-1)), where noz(n) = A004719(n). 5
0, 1, 3, 6, 1, 6, 12, 19, 27, 36, 46, 57, 69, 82, 96, 111, 127, 144, 162, 181, 21, 42, 64, 87, 111, 136, 162, 189, 217, 246, 276, 37, 69, 12, 46, 81, 117, 154, 192, 231, 271, 312, 354, 397, 441, 486, 532, 579, 627, 676, 726, 777, 829, 882, 936, 991, 147, 24, 82, 141, 21, 82, 144, 27, 91, 156, 222, 289 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

COMMENTS

Zeroless analog of triangular numbers.

LINKS

N. J. A. Sloane, Table of n, a(n) for n = 0..5000

MAPLE

noz:=proc(n) local a, t1, i, j; a:=0; t1:=convert(n, base, 10); for i from 1 to nops(t1) do j:=t1[nops(t1)+1-i]; if j <> 0 then a := 10*a+j; fi; od: a; end;

t1:=[0]; for n from 1 to 50 do t1:=[op(t1), noz(n+t1[n])]; od: t1;

CROSSREFS

Cf. A004719, A242350, A243063, A243657.

Sequence in context: A004157 A091068 A065233 * A072452 A155830 A096602

Adjacent sequences:  A243655 A243656 A243657 * A243659 A243660 A243661

KEYWORD

nonn,base,look,hear

AUTHOR

N. J. A. Sloane, Jun 11 2014

STATUS

approved

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Last modified June 24 13:17 EDT 2019. Contains 324325 sequences. (Running on oeis4.)