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A277400 Like 7-white numbers but with blocks of 7 starting at left. 3
0, 1, 1000000, 20585070, 25104356, 25975583, 27483737, 27940490, 27941490, 28133416, 29069509, 32345773, 32482961, 32581773, 33332330, 34310934, 34676272, 35530163, 35707886, 36067139, 41716867, 42163087, 42568703, 44444440, 47745130 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

LINKS

Table of n, a(n) for n=1..25.

EXAMPLE

20585070^7 = 1566269305839650871270449961448347855098390430000000 and 1566269 + 3058396 + 5087127 + 0449961 + 4483478 + 5509839 + 0430000 + 000 = 20585070.

MAPLE

P:=proc(q, h) local a, b, c, d, n; print(0); for n from 1 to q do

a:=n^h; d:=ilog10(n^h)+1; c:=d-h*trunc(d/h); b:=0;

while a>0 do b:=b+(a mod 10^c); a:=trunc(a/10^c); c:=h; od;

if n=b then print(n); fi; od; end: P(10^15, 7);

CROSSREFS

Cf. A037042-A037045, A274833, A274834, A277397, A277398, A277399.

Sequence in context: A252903 A289140 A033426 * A017178 A017274 A017514

Adjacent sequences:  A277397 A277398 A277399 * A277401 A277402 A277403

KEYWORD

nonn,base,easy,fini,full

AUTHOR

Paolo P. Lava, Oct 13 2016

STATUS

approved

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Last modified July 9 14:41 EDT 2020. Contains 335543 sequences. (Running on oeis4.)