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 A291670 Numbers k such that 2 is the smallest decimal digit of k^4. 4
 4, 5, 22, 72, 74, 128, 138, 154, 244, 256, 272, 292, 388, 404, 426, 434, 494, 506, 542, 562, 718, 756, 818, 868, 876, 1266, 1344, 1372, 1376, 1434, 1442, 1512, 1524, 1562, 1606, 1766, 1776, 2222, 2268, 2278, 2292, 2306, 2338, 2392, 2396, 2426, 2474, 2574 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 LINKS EXAMPLE 5 is in the sequence because 5^4 = 625, the smallest decimal digit of which is 2. PROG (PARI) select(k->vecmin(digits(k^4))==2, vector(10000, k, k)) CROSSREFS Cf. A291668, A291669, A291671, A291672. Sequence in context: A091130 A141447 A129346 * A176957 A341586 A010302 Adjacent sequences:  A291667 A291668 A291669 * A291671 A291672 A291673 KEYWORD nonn,base AUTHOR Colin Barker, Aug 29 2017 STATUS approved

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Last modified April 14 22:47 EDT 2021. Contains 342971 sequences. (Running on oeis4.)