A069028 Powers of 3 with strictly increasing sum of digits.

1, 3, 9, 729, 19683, 4782969, 94143178827, 847288609443, 7625597484987, 16677181699666569, 328256967394537077627, 26588814358957503287787, 717897987691852588770249, 381520424476945831628649898809

Offset

1,2

Links

Charles R Greathouse IV, Table of n, a(n) for n = 1..167

Prog

(PARI) print1(r=t=1); for(n=1, 99, s=sumdigits(t*=3); if(s>r, r=s; print1(", "t))) \\ Charles R Greathouse IV, Aug 05 2015

Crossrefs

Cf. A069027.

Sequence in context: A137036 A361389 A088031 * A318246 A137043 A112726

Adjacent sequences: A069025 A069026 A069027 * A069029 A069030 A069031

Keyword

nonn,base

Author

Amarnath Murthy, Apr 02 2002

Extensions

More terms from Larry Reeves (larryr(AT)acm.org), Jun 26 2002

a(11)-a(14) from Charles R Greathouse IV, Aug 05 2015

Status

approved