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A060031 Katydid sequence: closed under n -> 2n + 2 and 7n + 7. 1
1, 4, 10, 14, 22, 30, 35, 46, 62, 72, 77, 94, 105, 126, 146, 156, 161, 190, 212, 217, 252, 254, 294, 314, 324, 329, 382, 426, 436, 441, 506, 510, 511, 546, 590, 630, 650, 660, 665, 742, 766, 854, 874, 884, 889, 1014, 1022, 1024, 1029, 1094, 1099, 1134, 1182 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

REFERENCES

C. Pickover, Wonders of Numbers, Chap. 67 Katydid sequences, Oxford University Press, NY 2001, p. 164-165.

LINKS

Table of n, a(n) for n=1..53.

C. A. Pickover, "Wonders of Numbers, Adventures in Mathematics, Mind and Meaning," Zentralblatt review

CROSSREFS

Cf. A007319.

Sequence in context: A176551 A175731 A242486 * A112825 A051741 A022382

Adjacent sequences:  A060028 A060029 A060030 * A060032 A060033 A060034

KEYWORD

nonn

AUTHOR

Jason Earls, Mar 17 2001

EXTENSIONS

Corrected and extended by Larry Reeves (larryr(AT)acm.org), Apr 20 2001

STATUS

approved

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Last modified November 19 09:05 EST 2018. Contains 317348 sequences. (Running on oeis4.)