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A138842 Concatenation of initial and final digits of n-th even superperfect number A061652(n). 7
22, 44, 16, 64, 46, 66, 24, 14, 16, 36, 84, 84, 36, 24, 54, 74, 26, 16, 96, 14, 26, 16, 16, 26, 26, 26, 46, 24, 24, 26, 34, 84, 66, 24, 46, 36, 66, 26, 46, 64, 14, 64, 16, 66, 14, 86, 16 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Also, concatenation of initial and final digits of n-th superperfect number A019279(n), if there are no odd superperfect numbers.

Also, concatenation of A138124(n) and A138125(n).

LINKS

Table of n, a(n) for n=1..47.

CROSSREFS

Cf. A019279, A061652, A073729, A138124, A138125, A138838, A138840, A138841, A138843, A138844.

Sequence in context: A166058 A305609 A123799 * A040462 A269310 A015799

Adjacent sequences:  A138839 A138840 A138841 * A138843 A138844 A138845

KEYWORD

nonn,base,more,less

AUTHOR

Omar E. Pol, Apr 02 2008

EXTENSIONS

More terms from Jinyuan Wang, Mar 14 2020

STATUS

approved

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Last modified August 9 18:55 EDT 2022. Contains 356026 sequences. (Running on oeis4.)