A067179 Smallest number whose square has sum of digits A056991(n).

1, 2, 4, 3, 8, 7, 13, 24, 17, 43, 67, 63, 134, 83, 167, 264, 314, 313, 707, 1374, 836, 1667, 2236, 3114, 4472, 6833, 8167, 8937, 16667, 21886, 29614, 60663, 41833, 74833, 89437, 94863, 134164, 191833, 298327, 545793, 547613, 947617, 987917

Offset

1,2

Comments

a(n) is the smallest number whose square has the n-th possible digit sum.

Links

Zhao Hui Du, Table of n, a(n) for n = 1..147 (terms 1..94 from Giovanni Resta)

Formula

a(n) = sqrt(A067178(n)).

Crossrefs

Cf. A056991, A067178, A358702.

Sequence in context: A358523 A365930 A111699 * A318993 A355482 A188843

Adjacent sequences: A067176 A067177 A067178 * A067180 A067181 A067182

Keyword

nonn,base

Author

Amarnath Murthy, Jan 09 2002

Extensions

Corrected and extended by Antonio G. Astudillo (afg_astudillo(AT)lycos.com), Apr 24 2003

Offset corrected by Giovanni Resta, Jun 27 2018

Name corrected by Jon E. Schoenfield, Feb 18 2024

Status

approved