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 A089360 Prime worms. 0
 101, 131, 151, 181, 191, 313, 353, 373, 383, 727, 757, 787, 797, 919, 929, 12101, 14741, 18181, 32323, 34543, 35353, 35753, 72727, 74747, 75797, 78787, 79757, 94949, 95959, 97579, 1012321, 1212121, 1414741, 1474141, 1616161, 3131353 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS While some palindromic primes are included, there are other criteria for addition to this sequence. REFERENCES Carlos Rivera's primepuzzles.net, Puzzle 246 LINKS Carlos Rivera, Puzzle 246. The worms FORMULA From sequence of primes beginning with 3-digits, select those with identical first and last digits; no adjacent digits identical; and absolute value of sequential differences of paired digits a constant. EXAMPLE a(15)=12101; first and last digits = 1; no identical adjacent digits; abs(1-2)=1;abs(2-1)=1; abs(1-0)=1; abs(0-1)=1; the worm is 1. CROSSREFS Cf. A089291, A089315-89317, A048398-48405. Sequence in context: A154270 A056730 A077798 * A056728 A085112 A059758 Adjacent sequences:  A089357 A089358 A089359 * A089361 A089362 A089363 KEYWORD easy,nonn,base AUTHOR Enoch Haga, Dec 27 2003 STATUS approved

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Last modified October 22 05:29 EDT 2019. Contains 328315 sequences. (Running on oeis4.)