A277397 Like 4-white numbers but with blocks of 4 starting at left.

0, 1, 1000, 11110, 14638, 15628, 17170, 18217, 19305, 19999, 21649, 22320, 25234, 29041, 30195, 31428

Offset

1,3

Links

Table of n, a(n) for n=1..16.

Example

14638^4 = 45912080296849936 and 4591 + 2080+ 2968 + 4993 + 6 = 14638.

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, 4);

Crossrefs

Cf. A037042-A037045, A274833, A274834, A277398-A277400.

Sequence in context: A017643 A161770 A004632 * A250449 A117690 A186936

Adjacent sequences: A277394 A277395 A277396 * A277398 A277399 A277400

Keyword

nonn,base,easy,fini,full

Author

Paolo P. Lava, Oct 13 2016

Status

approved