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 A071590 Numbers n such that Reversal(n) < n. 7
 10, 20, 21, 30, 31, 32, 40, 41, 42, 43, 50, 51, 52, 53, 54, 60, 61, 62, 63, 64, 65, 70, 71, 72, 73, 74, 75, 76, 80, 81, 82, 83, 84, 85, 86, 87, 90, 91, 92, 93, 94, 95, 96, 97, 98, 100, 110, 120, 130, 140, 150, 160, 170, 180, 190, 200, 201, 210, 211, 220, 221, 230, 231 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 LINKS T. D. Noe, Table of n, a(n) for n = 1..1000 MATHEMATICA Select[Range[300], # > FromDigits[Reverse[IntegerDigits[#]]] &] (* T. D. Noe, Mar 14 2012 *) PROG (PARI) for(i=2, 300, n=(i); s=ceil(log(n)/log(10)); if((sum(i=0, s, 10^(s-i-1)*(floor(n/10^i*1.)-10*floor(n/10^(i+1)*1.))))

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Last modified January 19 14:53 EST 2020. Contains 331049 sequences. (Running on oeis4.)