A234311 - OEIS

A234311

Least number which can be written as a sum of at least 2 consecutive squares in at least n different ways.

5, 365, 147441, 554503705

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,1

COMMENTS

No more terms < 10^18. [Lars Blomberg, Jun 02 2014]

LINKS

EXAMPLE

a(1) = 5 = 1^2 + 2^2.

a(2) = 365 = 10^2 + 11^2 + 12^2 = 13^2 + 14^2.

a(3) = 147441 = 85^2+...+101^2 = 29^2+...+77^2 = 18^2+...+76^2.

a(4) = 554503705 = 480^2+...+1210^2 = 3570^2+...+3612^2 = 3613^2+...+3654^2 = 7442^2+...+7451^2.

CROSSREFS

KEYWORD

nonn,hard,more

AUTHOR

M. F. Hasler, Dec 23 2013

STATUS

approved