A066551 Let N =149162536496481100121441691962252562893243614..., the concatenation of the squares. a(n) is the n-digit number formed from the digits of N starting from the {n(n-1)/2 +1}th digit. Omit any leading zeros.

1, 49, 162, 5364, 96481, 100121, 1441691, 96225256, 289324361, 4004414845, 29576625676, 729784841900, 9611024108911, 56122512961369, 144415211600168, 1176418491936202, 52116220923042401, 250026012704280929

Offset

1,2

Comments

Are there any squares in this sequence other than 1 and 49?

Links

Table of n, a(n) for n=1..18.

Mathematica

With[{c=Flatten[IntegerDigits/@(Range[100]^2)]}, Table[FromDigits[Take[c, {(n(n-1))/2+1, (n(n-1))/2+n}]], {n, 20}]] (* Harvey P. Dale, Jul 21 2012 *)

Crossrefs

Cf. A066547, A066549.

Sequence in context: A226146 A339730 A338011 * A134210 A009409 A009431

Adjacent sequences: A066548 A066549 A066550 * A066552 A066553 A066554

Keyword

nonn,base

Author

Amarnath Murthy, Dec 16 2001

Extensions

Corrected and extended by Lior Manor Feb 13 2002

Status

approved