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

Author

Amarnath Murthy, Jan 09 2002

Keywords

• nonn
• base

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)

Crossrefs

Cf. A056991, A067178, A358702.

Formula

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

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