A048544
Smallest oblong (promic) number containing exactly n 7's.
Original entry on oeis.org
72, 11772, 771762, 757770, 77677782, 779777700, 7077772770, 778777127772, 7777770777090, 57777777767730, 7777577077877756, 177677777977777980, 17673737777477771772, 677777977779775677756, 1789771777777771777710, 7747977777770507777772, 298777877777767737777770
Offset: 1
-
With[{pn=2*Accumulate[Range[430000000]]},Table[Select[pn,DigitCount[#,10,7] == n&,1],{n,12}]]//Flatten (* Harvey P. Dale, Aug 14 2017 *)
-
def A048544(n):
k, m = 1, 2
while True:
if str(m).count('7') == n:
return m
k += 1
m += 2*k # Chai Wah Wu, Mar 23 2018
A048545
a(n) is the smallest value of m such that A002378(m), the m-th oblong number, contains exactly n 8's.
Original entry on oeis.org
13, 113, 886, 2861, 9213, 93855, 298053, 1359738, 2967970, 26189480, 220183761, 433461519, 3462498821, 28962801813, 43462498821, 722411301260, 942809540088, 9049247973113, 29354537778480, 195230348268113, 1970200215432144, 2426703296418144, 2233582298883761, 93802389568778480, 242669917148548480
Offset: 1
From _Jesse Sealand_, Oct 07 2019: (Start)
a(1) = 13 since A002378(13) = 182;
a(2) = 113 since A002378(113) = 12882;
a(3) = 886 since A002378(886) = 785882;
a(4) = 2861 since A002378(2861) = 8188182, etc.
(End).
A048530
Smallest oblong (promic) number containing exactly n 0's.
Original entry on oeis.org
0, 600, 10100, 390000, 1001000, 100030002, 100010000, 10000300002, 10000100000, 1000003000002, 1000001000000, 100000030000002, 100000010000000, 10000000300000002, 10000000100000000
Offset: 1
A048532
Smallest oblong (promic) number containing exactly n 1's.
Original entry on oeis.org
12, 110, 11130, 1021110, 104111412, 1151143112, 11141119152, 112311111512, 1111191111030, 151611114111162, 10115118111141192, 111017111111636112, 1111111811261716110, 18161111191151111150, 911115011111211111170, 17711116111217141111112, 110111041311117211111110
Offset: 1
A048534
Smallest oblong (promic) number containing exactly n 2's.
Original entry on oeis.org
2, 272, 20022, 210222, 2127222, 112222242, 1329222222, 222721228422, 222222202620, 12225222042222, 222922622262242, 22222622629269222, 222262242222052122, 22222222222226402, 222222624222746822222, 13222522222222257222852, 222222225263222925292272
Offset: 1
A048536
Smallest oblong (promic) number containing exactly n 3's.
Original entry on oeis.org
30, 1332, 33306, 3303306, 23333730, 33333302, 23433333320, 333339373380, 13393363833330, 337333336323132, 33333334306433532, 332333844339333332, 3383333633731033332, 313337139333377333330, 1335333331339333343030, 236133338333333323833132, 3293333837330583333333332
Offset: 1
A048538
Smallest oblong (promic) number containing exactly n 4's.
Original entry on oeis.org
42, 4422, 46440, 464442, 44642442, 144444342, 40447444340, 2344449414440, 42794944444440, 443448440044440, 24442434644444460, 455758444444444440, 34444442714441644442, 44441704844441444442, 14444904404444444646450, 344407444483444494444942, 1244444414842444444444506
Offset: 1
A048540
Smallest oblong (promic) number containing exactly n 5's.
Original entry on oeis.org
56, 552, 5550, 5055752, 5255556, 552555542, 2555555256, 551555015556, 5555555065506, 515605555595550, 5558455555057550, 495553555055055552, 555055556595557556, 15975555555558555452, 5525459555405553555552, 59555925551555575555056, 255555555455525595515520
Offset: 1
A048542
Smallest oblong (promic) number containing exactly n 6's.
Original entry on oeis.org
6, 3660, 66306, 666672, 16666806, 6066462656, 66686606406, 666692662656, 20666666069660, 666676608666642, 10666051666666662, 664566666660662640, 666626669666607656, 6666086666606866662, 616766666966468666660, 66636666164666636562656, 1536666668666666766166056
Offset: 1
A048548
Smallest oblong (promic) number containing exactly n 9's.
Original entry on oeis.org
90, 992, 792990, 4992990, 199699292, 919999892, 29939899992, 939969999920, 99179499990990, 999690999669990, 129990929999959950, 299899968999993990, 10999489909979999990, 299929969229995999992, 12999999959999499709890, 126994909999399899999990, 9399899999156999909995992
Offset: 1
Showing 1-10 of 10 results.