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A039944 Undulating palindromic primes of form ABABAB...BA with alternating prime and nonprime digits. 2
2, 3, 5, 7, 131, 151, 313, 383, 787, 797, 929, 74747, 78787, 95959, 1212121, 383838383, 929292929, 979797979, 12121212121, 151515151515151, 383838383838383, 38383838383838383, 74747474747474747, 95959595959595959 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

REFERENCES

C. A. Pickover, "Wonders of Numbers", Oxford New York 2001, Chapter 52, pp. 123-124, 316-317.

LINKS

Table of n, a(n) for n=1..24.

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

CROSSREFS

Sequence in context: A090718 A167853 A117703 * A076611 A082805 A071119

Adjacent sequences:  A039941 A039942 A039943 * A039945 A039946 A039947

KEYWORD

base,nonn

AUTHOR

G. L. Honaker, Jr.

STATUS

approved

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Last modified September 23 21:16 EDT 2017. Contains 292391 sequences.