OFFSET
1,1
COMMENTS
In base 12 the sequence is 41, 3741, 36X741, 36X1X741, 36X151X741, 36X14851X741, 36X147E851X741, 36X147E2E851X741, 36X147E262E851X741, 36X147E25962E851X741, where X is 10 and E is 11.
FORMULA
a(n) = (6*(12^n - 1)/11 + 1)^2 = A127860(n) + (12^(2*n) - 1)/11. - Max Alekseyev, Jul 27 2023
EXAMPLE
a(1) = A127859(1)^2 = 7^2 = 49.
CROSSREFS
KEYWORD
nonn,base
AUTHOR
Walter Kehowski, Feb 04 2007
EXTENSIONS
Edited by Max Alekseyev, Jul 27 2023
STATUS
approved