A038487 Sums of two distinct powers of 9.

10, 82, 90, 730, 738, 810, 6562, 6570, 6642, 7290, 59050, 59058, 59130, 59778, 65610, 531442, 531450, 531522, 532170, 538002, 590490, 4782970, 4782978, 4783050, 4783698, 4789530, 4842018, 5314410, 43046722, 43046730, 43046802, 43047450, 43053282

Offset

1,1

Links

Robert Israel, Table of n, a(n) for n = 1..10001

Formula

a(n)=9^A002024(n)+9^A002262(n). - M. F. Hasler, Aug 31 2014

Maple

N:= 10^10: # to get all terms <= N
{seq(seq(9^a+9^b, b=0..a-1), a=1..floor(log[9](N)))}; # Robert Israel, Aug 31 2014

Mathematica

Total/@Subsets[9^Range[0, 10], {2}]//Union (* Harvey P. Dale, Aug 25 2023 *)

Prog

(PARI) for(a=0, 19, for(b=0, a-1, print1(9^a+9^b, ", "))) \\ M. F. Hasler, Aug 31 2014

Crossrefs

Base 9 interpretation of A038444.

Sequence in context: A308862 A193327 A043458 * A043028 A076288 A362508

Adjacent sequences: A038484 A038485 A038486 * A038488 A038489 A038490

Keyword

nonn,easy

Author

Olivier Gérard

Extensions

More terms from Vincenzo Librandi, Aug 06 2009

Corrected by Harvey P. Dale, Aug 31 2014

Offset changed from 0 to 1 by M. F. Hasler, Aug 31 2014

Status

approved