A075004 -id:A075004 - cp's OEIS frontend

A075003 Floor[ concatenation of n+1 and n divided by 2 ].

5, 10, 16, 21, 27, 32, 38, 43, 49, 54, 555, 605, 656, 706, 757, 807, 858, 908, 959, 1009, 1060, 1110, 1161, 1211, 1262, 1312, 1363, 1413, 1464, 1514, 1565, 1615, 1666, 1716, 1767, 1817, 1868, 1918, 1969, 2019, 2070, 2120, 2171, 2221, 2272, 2322, 2373, 2423

Offset: 0

Amarnath Murthy, Sep 01 2002

			Sequence exhibits similar properties to A074993.

Cf. A074991 to A075000 and A075004 to A075010.

seq(floor((n*10+(n-1))/2),n=1..10),seq(floor((n*100+(n-1))/2),n=11..99);

More terms from Sascha Kurz, Jan 14 2003

A075005 Floor[ concatenation of n+3, n+2, n+1 and n divided by 4 ].

Original entry on oeis.org

802, 1080, 1358, 1635, 1913, 2191, 2469, 2746, 27774, 302777, 3280277, 3532802, 3785328, 4037853, 4290378, 4542903, 4795429, 5047954, 5300479, 5553004, 5805530, 6058055, 6310580, 6563105, 6815631, 7068156, 7320681, 7573206

Offset: 0

Amarnath Murthy, Sep 01 2002

Cf. A074991 to A075000, A075003, A075004 and A074996 to A075010.

seq(floor(((n+3)*1000+(n+2)*100+(n+1)*10+n)/4), n=0..7), floor(111098/4), floor(1211109/4), seq(floor(((n+3)*1000^2+(n+2)*100^2+(n+1)*10^2+n)/4), n=10..99);

More terms from Sascha Kurz, Jan 14 2003

cp's OEIS Frontend

A075003 Floor[ concatenation of n+1 and n divided by 2 ].

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