A157465 Numbers seen as squares with at most one missing digit in decimal representation.

0, 1, 2, 3, 4, 5, 6, 8, 9, 10, 11, 12, 14, 16, 19, 21, 22, 24, 25, 26, 28, 29, 31, 32, 34, 36, 40, 41, 44, 48, 49, 52, 56, 57, 59, 61, 62, 64, 65, 66, 67, 69, 72, 74, 76, 78, 79, 81, 84, 89, 90, 91, 96, 100, 102, 104, 108, 109, 115, 116, 121, 122, 124, 125, 126, 129, 136

Offset

1,3

Comments

A157464(a(n)) > 0; A000290(n) is a subsequence;

A157466 gives numbers of these numbers <= n, A157466(a(n+1))=A157466(a(n))+1.

Links

R. Zumkeller, Table of n, a(n) for n = 1..1000

Example

Insert 5 into 200: 2500=50^2, therefore 200 is a term;
insert 4 into 201: 2401=49^2, therefore 201 is a term;
append 5 to 202: 2025=45^2, therefore 202 is a term.

Crossrefs

Sequence in context: A371738 A059519 A163101 * A257247 A269164 A356899

Adjacent sequences: A157462 A157463 A157464 * A157466 A157467 A157468

Keyword

base,nonn

Author

Reinhard Zumkeller, Mar 01 2009

Status

approved