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A138872 Concatenation of first 3 digits and last 3 digits of n-th even superperfect number A061652(n). 2
22, 44, 1616, 6464, 409096, 655536, 262144, 107824, 115976, 309056, 811064, 850864, 343576, 265064, 520544, 737504, 223176, 129536, 953496, 142304, 239056, 173776, 140096, 215736, 224376, 201256, 427336, 268104, 260504, 256656, 373224, 870944 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Also, concatenation of first 3 digits and last 3 digits of n-th superperfect number A019279(n), if there are no odd superperfect numbers.

LINKS

Table of n, a(n) for n=1..32.

CROSSREFS

Cf. A019279, A061652, A138866, A138877, A138870, A138871.

Sequence in context: A342171 A092328 A138869 * A003858 A335468 A041956

Adjacent sequences:  A138869 A138870 A138871 * A138873 A138874 A138875

KEYWORD

base,nonn,less

AUTHOR

Omar E. Pol, Apr 02 2008

EXTENSIONS

More terms from Max Alekseyev, Feb 11 2012

STATUS

approved

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Last modified January 26 03:23 EST 2022. Contains 350572 sequences. (Running on oeis4.)